Others have replied with factual information but I thought I'd add that I
have been using an Airmaster AP332 electric constant speed propeller on our
Jabiru J400 demonstrator (3300 powered) for some 180 hours, or so. I'm very
pleased with the performance which improves about 10% in take-off roll and
initial climb (3100 rpm), and about 0.5 gallons per hour in cruise (2600
rpm). We had to work a little harder to maintain acceptable ground cooling
in high summer in Florida, due to the prop's use of the Warp Drive blades
and the comparative lack of blade pitch adjacent to the ram-air cooling
inlets. Bigger inlets and attention to balancing Cylinder Head temps (CHTs)
and 'tweaking' to improve the duct-to-engine seal all improved matters. In
all, it's not a cheap propeller option at around $6,000 but if you need the
improved takeoff and cruise performance then go for it. I tell my customers
that it's a 'nice thing to have' rather than a necessity. The 3300's power
and torque curves are flatter than (say) the Rotax 912, so for the Jabiru,
it's hard to beat a fixed or ground adjustable prop for the money. The new
Sensenich carbon-bladed ground adjustable prop looks like being a very good
Suncoast Sportplanes, Inc.
39248 South Ave. Zephyrhills, FL 33542
Tel: 813 779 2324 Fax: 813 779 2246
I am interested to find out how people are getting on with the Jabiru 3300.
The good points and the bad points and is anyone having any problems.
Is anyone using a constant speed propeller?
There are no comments coming through this forum so I wonder who reads it.
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